Something weird happened with my laptop and Vista suddenly. I bought this laptop about 18 months ago that came pre-loaded with Windows Vista. It was working good. Yesterday night when my work was over, I installed the windows update and left the system. Today morning when I started the laptop, I got a prompt saying
“The product activation code you entered is not valid”
I found the product keys on the back of my laptop on Certificate of Authenticity sticker. I put the same in the product key field but after few seconds of “Activating Windows” it came up with Black desktop with a message on the right bottom of my screen saying:
“Windows Vista (TM) / Build 6001 / This copy of Windows is not genuine”
How is that possible? This is the OEM product. How it cannot be genuine? Any help please?
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